About
Overdrive
In
the 2008 game, “FIRST Overdrive,” students? robots are
designed to race around a track knocking down 40" inflated
Trackballs and moving them around the track, passing them either
over or under a 6'6" overpass. Extra points are scored by robots
positioning the Trackballs back on the overpass before the end of
the 2 minute and 15 second match.
2009
Build Season Updates
Based
on the nature of the game, we decided that the most effective strategy
was to hurdle as many balls as possible, and to control which balls
were on the overpass at the end of the game, as these were worth
12 points each. We chose to create a robot with a large front "talon"
that would grasp the ball, and elevate it to the height of the overpass.
The talon was attached to a cable powered elevator system made out
of 80/20 stock. We would mount this to a chassis with two central
powered wheels and four surrounding castors. This would yield an
easy 0° turn radius. It turned out that this orientation made
the robot spin too easily, but we were able to control it fairly
well with two joysticks. Most of the non-kit parts were all manufacture
by the students at our build site, TechWorks. We also extensively
used carbon fiber from another sponsor ACI. This material gives
plenty of strength while also keeping weight down, which is important
when you have a 120 pound weight limit. Many times, this material
has kept the robot together where other pieces have failed. We finished
the RoboTalon with about a day to spare for practice and shipped
it.
This
year, Rockford Robotics went to two competitions: The Midwest Regional
in Chicago and the Wisconsin Regional in Milwaukee. In Chicago,
we were able to make it into the finals, but we didn't move up much
further. We did discover many problems with the current iteration
of our Robot, the RoboTalon. Basically, our robot worked effectively,
but it was really slow. Our challenge for the next competition was
to keep our reliability, but to enhance our speed. We were able
to do this by changing a spool on our claw, adding a wheel to the
top of our claw to quickly pull in trackballs, and changing the
motor that we used to lift the trackballs up to the overpass. We
also were able to add some basic autonomous programming to help
get more points during the hybrid mode. Because of these large speed
boosts, we rechristened the robot, the "TurboTalon." Due
to the modifications, it took us longer to get the robot functioning
correctly during the competition. Despite this, we still performed
much better in Milwaukee then we did in Chicago. We were able to
lift balls faster, pull them into our claw faster, and move around
the field with more ease. Unfortunately, we weren't noticed as much
in Milwaukee, and we didn't make the finals. Overall, we greatly
enjoyed the competition, and the opportunity to play with such great
teams. We are also very grateful to our sponsors for making this
all possible. Next year, we are going to better focus our marketing
at the competitions to enhance our chances of doing even better.
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